Flow gun



FIG. 1 is a right side elevation view of a flow gun;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof; and,

FIG. 5 is a rear elevation view thereof.

The left side is a mirror image of the right side.

The ornamental design for a flow gun, as shown and described.